70000000 Farming and fishing and forestry and wildlife contracting services
70130000 Land and soil preparation and management and protection
70131503 Erosion control services
70170000 Water resources development and oversight
70171500 Water resource development service
70171502 Water resources planning services
70171504 Water resources mapping services
70171505 River basin development
70171506 Ground or surface water modeling services
70171603 Floodplain management
70171702 Dam maintenance or management services
70171706 Dike or embankment maintenance or management services
70171800 Drainage services
70171801 Land drainage services
70171802 Storm water drainage
70171803 Flood protection or control services
72000000 Building and facility construction and maintenance services
72100000 Building and facility maintenance and repair services
72102900 Facility maintenance and repair services
72102905 Exterior grounds maintenance
72111001 Single family home remodeling addition and repair service
72111002 Single family home general remodeling service
72111005 Single family home fire damage repair service
72111008 Single family new town home or garden home construction service
72111100 Multiple unit dwelling construction services
72111101 New apartment building construction service
72111103 New condominium construction service
72111111 General residential construction contractor service
72120000 Nonresidential building construction services
72121000 New industrial building and warehouse construction services
72121008 Warehouse construction and remodeling service
72121100 Commercial and office building construction services
72121101 Commercial and office building new construction service
72140000 Heavy construction services
72141200 Marine construction services
72141203 Dam construction service
72141205 Drainage system construction service
72141212 Pond construction service
77000000 Environmental services
77100000 Environmental management
77101700 Environmental advisory services
77101701 Environmental sciences advisory services
77101800 Environmental auditing
77102000 Environmental reporting services
81100000 Professional engineering services
81101500 Civil engineering
81101507 Dam engineering
81101512 Geographic information system CIS services
81101520 Hydrology assessment service
81101528 Stormwater engineering
83101502 Water resource management